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Oz

1 American  
[oz] / ɒz /

noun

Australian Slang.

  1. Australia.

Oz 2 American  
[oz] / ɒz /

noun

  1. Land of Oz.

oz. 3 American  

abbreviation

  1. ounce; ounces.

Oz 1 British  
/ ɒz /

noun

  1. slang Australia

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
oz 2 British  

abbreviation

  1. ounce

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
oz Scientific  

  1. Abbreviation of ounce

Etymology

Origin of Oz1

Jocular back formation from Aussie ( def. ) (with voiced sibilant)

Origin of oz.3

Abbreviation of Italian onza

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Like so many questionable figures Americans came to trust in the 2000s, Dr. Oz got his start as a frequent guest on “The Oprah Winfrey Show.”

From Los Angeles Times • Mar. 26, 2026

In an interview last week, CMS administrator Mehmet Oz said he would police both Republican- and Democratic-led states in a broader crackdown on fraud and waste.

From The Wall Street Journal • Mar. 13, 2026

"Her brother is a stunt performer back in Oz and she did say to me once if she hadn't been an actress, she might have gone into stunts," she says.

From BBC • Mar. 3, 2026

Sure, she’s a work of foam and fabric co-created by a man, Frank Oz, who provided her voice until 2002, when voice actor Eric Jacobson officially took over.

From Salon • Feb. 28, 2026

Down by the water, Jak and Oz were whooping into their nets.

From "Orphan Island" by Laurel Snyder

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.